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@Hitch tatrs latent @fittal econo .antena or NEW YORK; N. Y.

i v.Lctlers Patent No. 70,391, dated November 5, 1867.

IMPROVEMENT IN STBREOSGOPIG APPARATUS.

TO ALL WIIOM IT MAY CONCERN:

Be it known that I, GEORG BEIGEL, of the city .of New York, 25 Delancey street, in the county and State of New York, have invented a new and improved Stercoscopic Apparatus; and I do hereby declare that the following is a full, clear, and'exact description thereof,-which will enable those skilled in the art to make and use the same, reference being had to them accompanying drawing, forming part of this specification, in which drawingi Figure 1 represents a longitudinal vertical section of this invention,

Figure 2 is a sectional plan or top view of thc same.

.Similar letters indicatecorresponding parts. A

This invention rela-tes to a stereoscopic apparatus which is so arranged that a number of pictures can be introduced simultaneously all in a pack, and the necessity of securing cach picture in aseparate pictureholder is avoided. The pictures thus introduced are carried down singly before an opening in the case opposite the eye-glasses by means of a feed-screw and separatingscre\v, and after a picturehas been exhibited it is dropped down in the lower part of the case, where all the pictures arrange themselves in a pack, so that they can be readily removed whenever it may be desired.

A represents a case made of wood or any other suitable material, of such a size that it is capable of cover'- ing up andfprotecting the mechanism formoving and separating the pictures. These pictures are placed in a. pack on 4the platform B, where they are retained ingan inclined position by theV slide C, (sec fig. 1.) This slide `moves back and forth on suitable guides, motion being imparted to it by a worm-screw, D, which is situated withii'the platform B, in such a position that the edges of the threads project above the surface of said platform. A revolving motionl is imparted to said screw by means of a handle or key, which is inserted through a hole in the sidccf the case, and which fits on the end of a shaft or arbor that connects with said feed-screw byV a worm and'woimfwheel, or in any other suitable manner. The feed-screw D imparts motion to the slide C,

from the bottom of which project-s a tooth, a, down into the threads of the screw. This tooth is rigidly connectcd to a bar, o', which is pivoted to a lug, l, that is Vsecured to the rear wall of the slide C, and a. spring, e, has a tendency to raise thc same up out of contact with the threads of the feed-screw. When the tooth is depressed, however, it is' locked. down by a swinging bolt, d, which has its' fulcrum on a pivot, cZ, and which is provided witlra notch or shouldcrthatfcatches over the edge of the tooth a, or `bar a. The upper end of the holtA d catches in a tappet-rod, e, which-extends beyond the ends of the slide, and if said slide has reached the forward end f its stroke, the ends of thc tappet-rod come in contact with projections e in the interior of the case, and the bolt becomes disengaged from the tooth or bar, so as to allow said tooth to rise out'of contact with the threads of the feed-screw. When thcrslidc arrives at the backward end of its stroke the pinfcomes in contact with the inner rear surface of the case,and by its action the elbow-lcverfl is turned on itspivot, and the har a', together with the tooth a, is depressed. Between the lever f1 and bar a a spring, f2, is interposed so as to allow the tooth to give if it should not be exactly opposite to a cavity on thcVfeed-screw, and to accommodate itself automatically as the work progresses. As the slide is propelled by the feed-screw in the direction of the arrow marked near it in iig. 1, the pictures are gradually forced out over the apron. E, and one picture after thc other comes in contact withthe separating-screw F. This `screw is geared together with the fecd-screw `by cog-wheels gh, so that it revolves six times, more or less, as fast as the feed-screw, in order to prevent any accumulation or checking of the pictures, and it is provided with a series of spiral steps, some of which, and particularly those towardsthe end of the separating-screw, are so narrow that they are certain to afford room for onlyonc picture. 4By these spiral steps the pictures are separated from each other, and the first picture `in the pack on reaching the last step drops down over the segmental guide-ways G, being caught by the trap Il. rThis trap is situated'at the bottom edge of an aperture, I, in the case, and the picture arranges itself on the inside of this aperture in an upright position opposite the eye-glasses J. These eye-glasses arc attached to a-lap, K, which connects to the caso A by means, of hinges, so that it can bc turned up or down', and thc eye-glasses themselves are so arranged that they can be folded down upon the flap K, or that they can be held in the proper position for looking at the pictures. This purpose is effected by securing the eye-glasses in :1. hinged head, Il, to which is attached a hinged T-shapcd brace, M, and the cross-bar o f this T-shaped brace is also hinged, so that the wholeI device can be folded together when thc eye-glasses are not used. When thev eye-glasses are put up for use, the brace. M bears against a lip, 1,', as shown in the drawing, and this brace also forms the diaphragm between the eye-glasses. The trap His hung on pivots 7c, secured in the sides of thc case -A, and it is so loaded that when it is left to follow its inherent gravity it will turn down and cause the picture to drop down into the lower partfof the case. From the trap extends an arm, Z, which hears against a pin, ma secured inthe lever n, which is subjected to the action of a spring, o, having a tendency to keep the sanicin theposition which it occupies in fr.'1. From the upper end of the lever n projects a handle or button, and it' said handle is carried in the direction of the arrow, marked near it in iig. 1, the pin m is thrown off from the arm Z, and the trap H' is free tio follow its gravityand to tilt down. After the picture delivered by the feedscrew andseparator to the trap has been viewed, the trap is tilted and the picture is caused to drop down into v the lower part of the box, and as the handle is released,the trap is thrown back to'its original position, and a linger, N, strikes the picture and throws -it back against the lower slide O. The linger/N projects from an arm, p, which connects with the lever n by a lever, q, and link, r, or in any other suitable manner, so that it is compolled to move with the sume. From the lowel slide O extends a cord or band, s', to a drum, s, which is mounted on an. arbor, P, which connects by a cord or band, t, with .the upper slide C, so that the lowerslide is drawn back as the upper slide advances Aby-the action vo-f thev feed-screw. The .diameter of the drum s, however, is larger than that part of the arbor P on whichthe cord t winds, so that the lower slide moves somewhat faster than the upper one, and sufficient room is obtained for the pictures as the same drop down into the lower pai-t of the case. After the whole number of -pictures have been viewed and caused to accumulate in the lower part of the case, a door in the side of said case is opened and the pack of pictures is removed without loss of time, and as the upper slide reaches the forward end of its stroke the tappct-rod e strikes the projections e', and the tooth a is thrown out of gear with the feed-screw, leaving the upper slide free to be moved hack on its guides. l

This backward motion is produced by a key which is inserted through a hole in th'e lower forward end of the case,and which acts on a. roller, Q, frornuwhich one or more bands u extend to the lower slide. By turning this roller in the direction of the arrow marked on it in iig. 1, the lower slide O is drawn forward, and at the same time, by the action of the cords's t, the upper slide C is drawn back, and as itarrives at the back end of its stroke the stop f strikes the case, and the tooth a is again thrown in gear with the feed-screw, ready for a new operation.

. It'l desired, my apparatus can also be used for transparent pictures by opening a door in the rear of the case. The operation of feeding these pictures is the same as that of feeding opaque pictures, and in order to prevent injurious shocks the trap H and the lower part of the case may be cushioned.

What I claim as new, and desire to secure by Letters Patent, is-

1. Introducing the pictures into the stereoscopic apparatus in packs or quantities, instead of singly or in pairs, as heretofore, substantially as and for the purposes described. l

2. The feedscrew D and slide C for propelling the packfof pictures, substantially as set forth.

3. The separating-screw F, provided with spiral steps, substantially as and for the purpose described.

4. The tappet-rod e, b olt d, and tooth a, in combination with the projections e', slide C, andV feed-screw D, substantially as and for the purpose set forth. i

5. The stop f, in combination with the tooth a, slide C, feed-screw D, and case A, constructed and operating substantially as and for the purpose described.

6. The trap H, in combination with the feeding and separating mechanism, constructed and operating suh- V stantially as vand for the purpose set forth. v

7. The folding flap K, hinged T-shaped brace M, and hinged head L, in combination with the eyc-glasses J and ease A, constructed and operating substantially asand for the purpose described.

8. The oscillating finger N, in combination with the trap H, and with the feeding and separating mechanism, constructed and operating substantially as and forthe purpose set forth.

9. The lower slide O, in combination with lthe folding and separating mechanism, constructed and operating substantially as and for the purpose described. I

10. The method, herein described, of collecting the pictures in the lower part of the case after they have been viewed, so that they can be removed in quantities or packs, as set forth.

11. Giving to the lower slide O a fasterv motion than to the feed-slide C, substantially as and for the pur pose described.

12. The winding-mechanism Q, in combination with the slides O C and cords s t, constructed and operating substantially as and for the purpose set forth.

GEOltG REIGEL 4Witnesses:

W. IIAUrr, G. Bano. 

